This makes international travel cheaper and easier than it is for citizens of other countries; those fromSyria and Somalia, by contrast, can only enter 31countries without a visa. These stark differences are revealedin the Passport Index, which ranks countries based on the number of nations where citizenscan go without gettinga visa.Global financial advisory firm Arton Capital compiled government data from193countries and six territories to create the 2016 ranking. Sweden's and Germany's passports are the mostpowerful because their governments havesignedmore mutual agreements with other countries